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Atlas / NTSB / ANC11CA003

NTSB CAROL · Event

Event ANC11CA003

2010-10-16 Merrill Field Airport, Alaska, United States Airport · PAMR None 1 aircraft Status: Completed

Registry · N4229M

FAA Aircraft Registry record.

Make / Model

PIPER PA-12

Year of manufacture

1947 · 63 years old at event

Engine

LYCOMING 0-290 SERIES (140 hp)

Seats / Engines

3 seats · 1 engine

Last airworthiness date

19560601

ADS-B equipped

Yes — Mode-S A506AC

Registrant of record

HARTMAN GREGORY G

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The certificated flight instructor's failure to apply the correct remedial actions to maintain directional control during the takeoff roll.

Factual narrative

The student pilot reported that he lost directional control of the tailwheel-equipped airplane during the takeoff roll. The airplane veered off the right side of the runway and hit a taxiway berm that resulted in substantial damage to the empennage. The flight instructor reported that the airplane initially yawed to the left. He took over the controls and attempted to correct the yaw, but the airplane veered off the right side of the runway. The flight instructor had a total of 563 flight hours, but reported no flight time in the make and model of the accident airplane. The student pilot reported that he had a total of 9.8 hours of flight time with 4.5 hours in make and model. The flight instructor stated that he should have closed the throttle as soon as directional control was lost, and that he should have “executed a positive exchange of flight controls.” The student pilot reported that during departure the airplane veered off the right side of the runway and collided with a taxiway berm, resulting in substantial damage to the empennage. The certificated flight instructor (CFI) reported that during takeoff, the airplane initially yawed to the left. He took authority over the flight controls and attempted to correct the yaw, but the airplane veered off the right side of the runway. The CFI stated that he should have closed the throttle as soon as directional control was lost. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Personnel issues-Action/decision-Action-Incorrect action performance-Instructor/check pilot - C
  • Personnel issues-Experience/knowledge-Experience/qualifications-Total experience w/ equipment-Instructor/check pilot
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C

Verbatim from NTSB's published report. Source file NTSB_2010_ANC11CA003.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.